Scroll bars with no cursor are difficult to use on desktops. They do not display the size of the window relative to the size of the page yet clicks make pages jump to that proportional location. The slow scroll feature is reduced to two tiny lines at the end of each scroll bar. I found no way to revert to the legacy scroll bars, featuring a cursor proportional to the size of the window relative to the size of the page, and allowing for slow scroll by dragging the cursor. Reverting to legacy controls is standard feature when innovative solutions are implemented.